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The Sausage Globular Clusters

  • Authors: G. C. Myeong, N. W. Evans, V. Belokurov, J. L. Sanders, and S. E. Koposov

2018 The Astrophysical Journal Letters 863 L28.

  • Provider: AAS Journals

Caption: Figure 5.

Upper panel: plot of the age of GCs vs. metallicity using data from Forbes & Bridges (2010). The Sausage GCs are shown with circular (probables) and square (possibles) black boundaries. Seven GCs that are claimed as former denizens of Sgr are shown as unfilled black diamonds. The sequences of Sgr GCs and Sausage GCs lie on two distinct, though closely matched, tracks. They are different from the bulk of the Milky Way GCs, which show a constant age of ∼13 Gyr independent of metallicity. Lower panel: plot of horizontal branch morphology vs. metallicity using data from Mackey & van den Bergh (2005). The locations of the two YH clusters (NGC 362, NGC 1261) are close to the boundary and their designation is open to debate. We have included them in our extended sample of Sausage GCs, as they are kinematically similar.

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